USE_GMAKE fails in QATty?

[Vitaly Magerya]

Hi, folks. I'm getting strange errors when building ports with
USE_GMAKE=YES on redports. See for yourself: [1-3]. It seems
that gmake is first built, but when it's time to install it --
turns out that it is already installed.

This only happens in QATty (i.e. with custom LOCALBASE and
PREFIX).

Does anyone know what's going on?

[1] https://redports.org/~magv/20120707090245-40946-33527/ypsilon-0.9.6.3_2.log
[2] https://redports.org/~magv/20120707085427-67533-33521/chicken-4.7.0.6.log
[3] https://redports.org/~magv/20120707091012-52894-33530/premake4-4.3.log